September 15, 2011

LED Bulbs Suppress Melatonin 5 Times More Than Other Bulbs

Humans are meant to sleep in darkness. Nighttime lighting has been shown to increase the risks of cancer and exacerbate air pollution; however, most significantly for overall human health, it affects our rest. According to a new study, LED lights suppress melatonin levels. Green Prophet reports:

Exposure to the light of white LED bulbs, it turns out, suppresses melatonin five times more than exposure to the outdoor lights filled with high pressure sodium bulbs that give off an orange-yellow light. "Just as there are regulations and standards for 'classic' pollutants, there should also be regulations and rules for the pollution stemming from artificial light at night," says Prof. Abraham Haim of the University of Haifa who is following the effects of cancer and artificial lights at night.

Melatonin is a compound that adjusts our biological clock and is known for its anti-oxidant and anti-cancerous properties. The study investigated the influence of different types of bulbs on "light pollution" and the suppression of melatonin, with the researchers recommending several steps that should be taken to balance the need to save energy and protecting public health.

Although LEDs are better for the environment due to lower energy usage, "over-lighting" with any kind of bulb should be avoided to protect human health.

Read More in: Energy Savers | Health

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Posted by Jennifer Lance at September 15, 2011 12:20 AM

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